Improvement in stoves



J. HAFER.

Stove.-

Pat ented Oct, 27, 1863.

M. PETERS. PhMnLilhognphan Wuhingtnn. 0.0.

; UNITED STATES ATENT FFICE.

JOHN HAFEB, OF BEDFORD, PENNSYLVANIA.

IMPROVEMENT IN STOVES.

Specification forming part of Letters Patent No. MPAQE, dated October 27, 1863.

To all whom it may concern:

Be it known that 1, JOHN HAFER, of Bedford, in the county of Bedford and State of Pennsylvania, have invented certain new and useful Improvements in Radiators, of which the following is a full, clear, and accurate description, reference being had to the accompanying drawings, which make part of this description, and in. which- Figure 1 represents a perspective view of my radiating-stove, and Fig. 2 is a vertical central section through the same.

All the metallic coal -burning radiators, stoves, or furnaces for heating buildings now in use, of which I have any knowledge, are defective in one of two very material particularsnamely, the one class consume too large a quantity of fuel to be used with proper economy, owing to a construction which permits the rapid escape of the heated products of combustion directly from the stove, radiator, or furnace, while the other class employ so many tortuous flues as to rapidly accumulate soot or ashes within them, which obstructs their draft, and thus it becomes extrcmely troublesome and requires much labor operation.

My invention has relation to an improvement which will remedy the defects of both classes of the radiators now inuse,in the particulars named, for, while it presents a very large heating-surface in a small compass and long detains the products of combustion. within the radiator, it is so constructed as almost to preclude the possibility of its becoming obstructed by soot or ashes that can at all affeet its draft injuriously or cause it to require frequent cleaning, and my invention thus effects a double economy,'requiring proportionately but a small quantity of fuel and little labor in keeping it clean.

To this end my invention consists in placing within the radiator, stove, or furnace two or more right or oblique cones, one above the other, and so arranged that the heated products of combustion will pass into and around each cone before escaping into or out at the smoke-pipe.

To enable others skilled inthe art to make and use my invention, I will proceed to describe its construction and operation.

7 My invention may be beneficially and economicall y applied to many varieties of theradiators, stoves, or heaters in common use, but more especially to those having a cast-iron base for the ash-box or fire-pot and top, with a jacket of cast or sheet iron between the top or cap and fire-pot, the whole having the gen eral form or out-line of Fig. 1 in the drawings.

On lugs or projections to a, cast with or riveted to the inside of the top rim of the fire-pot, and three or more in number, I place a castiron cone, as shown in Fig. 2, at B, which should be cast as thin as may be consistent with suflicient strength, and rest upon the lugs a little above the upper edge of the firepot. Above this cone B, and on three or more supports, b I), cast within or riveted to the jacket or case 0, I suspend a second cone, D, that may be of cast or sheet iron, and supported in a position which will leave its base above the apex of the lower cone, and so on for any number of cones that canbe contained within the desired height of any radiator, stove, or furnace for heating buildings, more than two, when it is desired to increase the number, though in practice I find two to operate extremely well.

To use a larger number of cones than two within the same radiator, stove, or furnace, it may be necessary to drop the base of the'second cone below the apex of the first cone, and the base of the third cone below the apex of the second, as shown in red lines in Fig. 2, the upper cones having strips 'to retain them in place, riveted at one end to the base of the cones and at the other end to the jacket or case.

The jacket or case 0, may be either a plane' cylinder or may taper from the top of the firepot to the cap d on top of the radiator, and may be cast or made of sheet-iron, and of many sides, as well as cylindrical, and either fluted or plane. The smoke-pipe may be attached,as at d in the drawings,to the cap or on the side of the jacket. the jacket are perpendicular or taper, is not material; but the base of the cones must be constructed of a diameter sufficiently less than the jacket to permit the escape of all the products of combustion freely around and between the cone and the inner wall of the jacket.

The operation is as follows: A fire being kindled in the fire-pot A, the heated products Whether the sides of of combustion ascend directly into the first cone, where the flame and heated gases reverberate and pass down to the base of the first cone, round and between it and the jacket, and ascendalong and over the outer sides of the first cone and the inner surface of the jacket into the second cone, when the course of the ascending products of combustion repeats the reverberations through, around, and over the second cone, and proceed upward,repeatin g the reverberations from cone to cone throughout the en tire number employed, until they escape through the smoke pipe, after havin g parted with nearly all their heat by conduction to the interior of the jacket, and from thence are radiated to all parts of the room or building to be heated.

I am aware that a single right cone has been used, as in the patent of E. B. Oherevy, No. 24,599, directly over the fire-box, and that in the patent of Porter Mitchel], dated June 25, 1861, the frustums of cones united to secure by Letters Patent, is

The combination of two or more right or oblique cones, the vertex of each cone being a closed, within the radiator, arranged substantially as described, for the purposes set forth.

- In testimony whereof I have hereunto sub-v scribed my name.

JOHN HAFER. Witnesses:

S. W. BAROLAY, B. W. GARRETSON. 

